连续重整装置应用RTO技术效果

Application Effect of RTO Technology in CCR Unit

为了实现100×10^(4)t/a连续重整装置的区域实时优化目标,针对连续重整装置的石脑油加氢预处理、重整反应器、催化剂再生、重整精馏部分,应用实时在线优化(RTO)技术,以提高重整生成油芳烃收率为目标,进行系统开发。对已经实施了先进控制的预加氢单元、重整单元的控制器进行符合区域实时优化要求的改造和重建,并新建了催化剂再生单元再生器的先进控制器和为实现重整装置总经济目标的产值控制器。实施整个连续重整装置的区域实时优化,使得先进控制器的功能更加全面,由优化的低频上升为实时优化的高频,在有效降低操作人员劳动强度的同时,对装置进行在线闭环优化,帮助装置实现精细化的操作和控制。以芳烃最大化RTO方案为例,试运行阶段投用RTO后芳烃收率提高1.57%,液收提高0.06%,能耗降低,年增加效益1700万元以上。

In order to achieve the regional real-time optimization goal for a 1.0 Mt/a CCR unit,dynamic real-time optimization(RTO)technology was applied in the system development of the naphtha hydrotreating pretreatment,reforming reactor,catalyst regeneration and reforming distillation sections of the CCR unit to improve the aromatics yield of reformate.Modification and reconstruction meeting the regional real-time optimiza-tion requirements were carried out for the controllers of pre-hydrogenation unit and reforming unit with advanced control.A new advanced controller was built for the regenerator of catalyst regeneration unit,and a new output value controller was built to achieve the total economic goal of the CCR unit.Regional real-time optimization was implemented for the entire CCR unit,so that the functions of advanced controllers are more comprehensive,improving from optimized low frequency to real-time optimized high frequency.While effectively reducing the labor intensity of operators,online closed-loop optimization was carried out for the unit to achieve fine operation and control.Taking RTO scheme which maximizes the aromatics yield as an example,after RTO is applied during commissioning,the aromatics yield and liquid yield are increased by 1.57%and 0.06%respectively,the energy consumption is reduced,and the annual profit is increased by more than 17 million yuan.